Grease-cup



w. F. LENT.

I GREASE CUP.

APPLICATION FILED MAR. 1, 1919.

Patentd Jan. 20,1920.

earns rnrnnr orrion WILMAB e LENTLOF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE ennrs'r MANiT rnc'ronme oorarnnr, n conronn'rroiv on CONNECTICUT.

\ ennnsncur.

Specification of Letters Patent.

Application filed March. 3, 1919. Serial No. 280,034.

To all whom'it may concern:

3 Be it known that I, NILMAn Lnn'r, a citizen of the United States, residing at NewHaven; inthe county of New Haven and Stateof Connecticut, have invented or dis covered certain new and useful Improve ments in Grease-Cups, of which the following is a specification, reference being had therein 'to' the accompanying drawing.

This invention relates-"to grease cups adapted to hold a soft or semi-liquid lubricant which is forced out by a piston or plunger, and the invention has for its 0bjectto provide a grease cup, of the class re i'erred to, which is of such construction that the piston or follower may be screw operated in the usual manner to force out the lubricant; or, by proper ad ustment, the stem oi the piston may be disengaged from the screw threads of the nut or nuts through which it passes and may then be quickly operated either for the purpose of returning the p e ton to its initial position or for the purpose of quickly ioi'cingout the lubricant. Thus when the stem or the piston is disengaged, and the piston is thus tree to be operated quickly by hand, the device is adapted to r serve as a grease gun to quickly fill up a 'bearingto-be lubricated, after which the parts may be adjusted so that the screwthreaded stem of the piston may be operated in its usual manner to feed the lubricant to the bearing to be lubricated. The present invention is shown as being applied to the form of grease cup shown and described in my application, No. 268,934, filed Dec. 30,

1918; but it willbe understood that the invention may be applied to other forms of ygrease cups comprising screw-operated pistons or plungers.

In'the accompanying drawing Figure 1 is a central sectional view of the improved grease cup. Fig. 2 is a cross section of the same on line2-2, Fig. 1. Fig. 3 is a detail p'l an" view of the fixed nut, showing also the piston stern in section, and Fig. 4:

ton stem.

is a cross section of the screw-threaded pis- Referring to the drawing, 12 denotes a 'holl ow threaded nipple adapted to be screwed into a bearing; and which is provided wlth a lock nut 13 1'01." lietalnmg the same in place. The nipple 12 has a flanged portion TM; which is attached in any suitable manner to a base 153 of a! frame part cmnthe nipple 12.

prising upwardly extending arms 16 at the upper portion of which is an internally in said sleeve or collar for the purposeset forth in my said application llo. 268,934. A packing Washer 20 is preferably interposed between the lower-end of the said receptacle O1"l10lCl6I'.l9 'fli1fl the dang-e14} of Fixed to the upper part of the receptacle or holder 19, so that it cannot rotate within said receptacle or h older, is a nut '21. through which the threaded shank or stein 22 of the piston or follower 23 extends; and above the said nut 21 is a second nut 24. through which the said screw-threaded shank or stem also extends. The nut 24: engages with screw threads on the inside of the upper portion of the receptacle or holder 19, said threads having the same pitch as the threads on the nut, and the said nut 2%: is provided. on its under side with a segmei-ital recessQF of about 90 extent. Fixedto the nut 21is a stop pin or screw the upper end of which extends into the said segmental recess in such position that when said nut 24: is given a quarter turn in either direction the sad stop pin or screw will engage one of the opposite end walls-oi said segmental :re-

cesses.

The screw threads on the piston shank or stem 22 are relieved-or cut away on oppo-- site sides, as are also the threads on the opposite sides pf the holes in the nuts 21,-and 24. When the nut 241is turned so that its relieved thread portions register with therelieved threaded portions of the nut 21,- and the piston stem or shank 22 is turned-to bring -its threaded portions into -.register ice with the relieved portions oft-he said nuts,

the said piston shank or stein will be disengaged from the threaded portions OfwbQth nuts and will then be free to he moved up or down quickly by the handle 27 fixed with the relieved tl'n'cml pmlzin'l'ls of the not 7 21 the threaded stem or shank of the piston 4 19. piston 23 quickly to the top of the receptacle will be engaged with the threads oi said nuts so that said stem or shank may be screwed down in the usual manner to force the lubricant out of the receptacle or holder Thus when it is desired to return the or holder 19, when said receptacle or holder is to be filled with lubricant, the nut 24: will be given a quarter turn for the purpose of bringing the relieved or cut-away parts of its screw threads into register with the relieved or cut-away thread parts of the nut 21; and if the bearing to be lubricated has not been filled with lubricant the said piston may be moved down quickly by its handle, and thus the device will act as a grease gun to fill up the bearing quickly with lubricant.

To prevent accidental displacement of the nut 2d when it has been turned to either of the positions above referred to, a spring washer 28 will preferably be interposed be tween said nut 24 and the top of the nut 21.

v From the foregoing it will be understood that the piston of the grease cup maybe quickly returned to a proper position in the receptacle or holder 19 to be filled, and it will also be understood that, when desired, the said piston may be operated quickly to force the lubricant into a bearing when it is desired to do this more rapidly than could be effected by the usual screw adjustment of the said piston.

The invention is not to be l'nulci'stood as being; limited to the details of construction and arrangement shown and described, as such details may be varied widely, within the'limits of mechanical skill, without departing from the spirit and scope of the invention.

Having thus described my invention Ii claim and desire to secure by Letters Fatent:

1. In a grease cup, the comoination with a receptacle or holder, of a follower fitting said receptacle or holder and Aided with a screw-threaded shank or steel hill-i113; re lieved or cut-away portions, or means co operating with said screw-threaded shank whereby said follower may be caused to travel by screw adjustment in. said receptacle 0r holder, or whereby said shank or stem may be disengaged so that said follower may be moved manually quickly in said receptacle or holder, said means coniprisingtwo threaded parts, one fixed and the other adjust-able, said threaded parts having relieved or cut-away internal threaded portions which may be adjusted into or out of register with each other.

2. in a g'rcas-ze cup, the combination with a receptacle or holder, or a follower fitting said rec ptacle or holder and Provided with a screw threaded shank or stem having relieved or cut-away portions, of means c0- operating with said screw-threaded shank whereby: said follower may be caused to travel. by a screw adjustment in said receptacle or holder, or whereby said shank or stem may be disengaged so that said follower in' v be moved manually quickly in said receptacle or holder, said means comprising two nuts, one fixed and the other adjustable, said nuts having relieved or cutaway internal threaded portions which may be brought into or out of register witheach other, and stop for limiting the turning movement of said adjustable nut.

3. in a grease cup, the combinationwith a receptacle or holder, oi a follower fitting said receptacle or holder and provided with a screw-threaded shank or stem having relieved or cutaway portions, of means cooperating with said screw-threaded shank or stem whereby s id follower may be caused to travel by a screw adjustment in said receptacle or holder, or whereby said shank or stem ma be disengaged so that said follower a be moved manually quickly in said receptacle or holder, said means coinprisiug two nuts, one fixed and the other adjust? said nuts having; relieved or cutaway intm'ual threaded portions which may be brought into or out oi register with each other, one o1" said nuts having" a segmental recess, and a lined stop device extending into said recess in proper position to be engaged by the end walls thereof.

l. a grease cup, the combination with a 7 ho'f of a. follower fitting or holder and provided with hank stein having revertions, 01" means coscr v-threaded shank r may be caused rent in said recepa screw-"thin:

liered v A aith d 5 ierebi to a s by ascre 5c tacl or holder, or whereby sald shank or stem m be disengaged so that sald follower may be moved manually quickly in said receptacle or holder, two nuts, one fixed and the otheadjustable, said nuts ln-win'g relieved or cut-away internal threaded portions which may be brought into or out of; register with each other, and a spring friction washer for pre venting accidental turning movement of said adjustable nut.

In testimony whereof l aflix my signature.

lVILlll/Lll, F. LENT.

said means comprising 

